Doctors reported in the New England Journal of Medicine that they diagnosed a case of a rare condition called cutis verticus gyrata, which causes the folds in the scalp to form - specifically, "ridges and furrows resembling the brain's surface," write Dr. Karen Regina Rosso Schons and Andre Avelino Costa Beber of Hospital Universitario de Santa Maria in Brazil.

These scalp changes started showing up two years before doctors saw the 21-year-old patient. He didn't display symptoms of neurological or psychiatric conditions, but he did have intellectual or learning impairment.

Doctors did not attempt an intervention because "the patient had no associated disorders and the condition did not bother him cosmetically."

After a year, the patient's presentation of his condition was the same, according to the report.